Window operator



March 6, 1945. l V. S LUNDELL 2,370,740

- WINDOW OPERATOR Filed OCT.. 14, 1942 l 2 Sheets-Sheet l gwoon/bor,

March 6, 1945. v s. LUNDELL 2,370,740

wiNDow OPERATOR Filed Oct. 14, 1942 v 2 Sheets-Sheet 2 glu/umm panel orenclosure of the Patented Mar. 6, 1945 UNITED STATESv PATENT` .y

Lundell-Eckberg Manufacturing Company, Y Inc., Jamestown, `N. Y., a corporation of New-y York . Application october 14, 19422, seriaiNo. 461,911

claims. (cl. zes-128) This invention relates to an improved operating mechanism'for windows, and particularly to a mechanism for windows of thesliding type.

lMore specifically, the invention is directed to an operating mechanism for use with windows such as are commonly provided in ships. These windows are constructed with heavy frames and glass to withstand hard usage, and are not susceptible to operation by means of conventional operators. Windows of this nature must be capable of being so'cp'erated as to provide an eiectual seal against the elements when in closed position and be positively held in such position, or in open position.

- The present inventionv has for its object the provision of an operator of such ruggedness-as f to be capable-of adjusting ships Windows or other heavy windows. Additionally, the invention' provides an operator that is positive in its action and which, by reason of its low eiliciency, assures the window remaining in anyoperated position. Additionally, the invention is directed to a heavy duty operation that is not only'of simple design and construction, but is capable of adjustment to alter the ratio of movement between the operating handle and the Window. f

1 Other objects and advantages of the invention will lbe more fully understood from a consideration of the following specication, taken in conjunction with the accompanyingy drawings; and nwhich l i I.

Fig. 1 is a frontvelevational viewfof the invention-mounted von a window structure, the-front operator having lbeen removed; J y

Fig. 2 is an enlarged vertical sectional view of the structure of Fig. l 'and is taken-substantially on line 2 2 of that ligure; I

Fig. 3 is'an enlarged horizontal sectional view of a part of the operator mechanism, being taken substantially on the line 3-3 .of Fig."1f; and

Fig.4 is an enlarged fragmentary reareleva--v tional viewof a part ofv theoperator mechanism.

Referring to therdrawings, therefeience nu'` meral I Dis" ."employe'd-t generally designate a ywindow structure of the sliding sash type, vto

and includes upper and lower iianges I3 and I4; Centrally, the rail is widenedgas atIS, anges I3 and I4 following this-change `in contour. Depending froml the centralportion I6- are angle members I1.

th'eir lower'endsbya cross platey I8; The length ylrnownland forms no part vof the invention.

The sash I9 is carried 'by a member'23lf'Theupper edge of this member'is formed .with a channel opening in which thesashv is securely positioned. I Attached to, or-jmtegraifwith the bers. On vthe upper end which is applied an operator embodying one form of the invention. In the present disclosure, the

. window structure includes only a single sash instead of the conventional two sashes, the single sash serving to close an opening in the upper portion of the frame of the structure. The window structure includes a rectangular frame II having a transverse rail I2 located approximately midway of the frame length. This rail is rigidly member 23 is a depending bracket 24. It is noted that themember 231 spans'fthe anglemembers I'I and that' the `bracket 24 fis'y between these memof the 'bracket 24, :adja

cent the-member 23;-isia ,pulley 26;# The central portion; ls o f the rail 12 isprovided with -studf shafts 21 and 28. Thesei'shaftsgmunt.identical gears 29.|` However, shaft '21 'is-also" fitted with a sprocket`-3l secured, as byy-pins 32`,Vt,fgear`f29.

-shaft zia mounts a smauersprooket aa-that is' sa curedlby pins to gear 29. The gears 2,9v are suitably` spaced to mesh with an intermediate gear 34, preferably of the samev diameter Y'as' gears 29. Gear 34 includes a shaft 36 Athat projects through a suitable openingL in the rail I2, adequate bearing forfthe shaft being provided'fin a' collar 31. A suitable crank 38 is mounted on the -s'quaredyend 39'o'ftheshaft 36. ''f "f f if* ,y

Mounted on the lower end "-of"bracke`t` 24V is a pulley 40. Further-'pulleys on the cross plate I8.l endless lchain'fl3`ff'extendsA over sprocket 3 I, downwardly beneath and around pulley 26 and thence upwardly again over sprocket 33. -The chain then continues downwardly beneath and around pulley 42, upwardly over the upper portion of pulley 40, then downwardly over pulley 4I and again upwardly over sprocket 3 I.

It will be noted that sprockets 3| and 33 are of different size and, consequently, an uneven movement of the chain 43 takes/place. This unattached to the vertical side rails of the frame even movement'is translated into a shortening or lengthening of the U-shaped portions 44 and These members are connected at 46 of the chain. As the portion 44 increases in length, portion 46 will correspondingly decrease in length, and since these portions of the chain move over pulleys 26 and 40 carried by bracket 24 on member 23, the sash I9 will be moved downwardly of the frame. Conversely, if the crank 38 is rotated in a direction to shorten portion 44 of the chain, that is, Ilrom the position of Fig. 1 to that of Figi 4, member 23 will be raised and the sash I9 moved toward closed position.

Through the use of gears 29 and 34, together v with sprockets 3l and 33, there can be no lost motion as betweenthe crank and member 23. Thus the drive is positive .ardn'operational slippage can occur. Additiljiall-byreas'on fof the arrangement of the chain andy pulleys, the mechanical advantage is such that the sash I9 may be moved into sealing closed position or into any open position despite the presence, of any ywith said sprockets, a looped portion of said chain intermediate its engagement with said sprockets engaging one of the idler pulleys of said member,

foreign matter in the guide channels 2lv and 22.

Fu.rtloerm-ore,l the sash, when moved into any position, will not become dislodgedfrom such po;- sition through vibrationyvnor can it be adjusted from onepositiontoanother except through operationkiof the crank 3g. f

Itmis of coursevbevldent that ,they lower portion o f the trame ll; between rail I2 and the bottom of the frame, is enclosed; the outside closure beinghsuggested atfl and the inside closure being entirely lremoved to disclose the working parts of the operator..

A trough-,applicant has shown and described a'r'ioperator withonly'one mechanical advantage ratio and one typeof mounting for the length changngvmportons and 46 of the chain, to-` gether with ertain other Aspecific structural details, it will be apparent that variations of this structure may be made andare contemplated insofar as such variations `are within the scope of the invention as dened by the annexed sans Havingvthus set forth Vmy ,invention what I claim as new and foi-'.which I desire protection by .Letters Patent is;

1.a awindowk structure having a frame and awindow sash slidably mounted in the frame, a sash ,operatorcomprising .a xed horizontal rail substantially midway or the length 'of said frame, a pairQ of Spaed apart diierential sprockets, said aprockets beingsha'ft mounted on lsaid rail, gears ficrsimultaneously rotating: saidsprockets inopi posite directions,- a-sash carrying member, idler pulleys adjacent the' lower end of said frame, an endless chain extending around and engaging the outer Aportions of said sprockets and saididler pul1eys,. loopedportions of said chain between said sprocketsnand said idler v-pulleys, means on said member for engaging -said. looped portions, and cperable'hrneans for* rotating said gears to uniformly alter the relative .length of said loopedy portions and move said sash carrying member'.

L Inl awindowwstruture having a frame and a window sash slidably mounted in the frame,

a sash operator comprising a rail lfixed Substanz a further looped portion in said chain being formed by' engagement of said chain with another idler pulleyof said member and said fixed idler pulleys; and means for operating said drive gear to alter the relative length of' the looped portions and thereby move said sash carrying member.

3'. In a Window structure having a frame and a windowsashl slidably mounted in the'frame, a sash operatorv comprising a fixed rail, a pair ci differential sprocketsmounted` on said rail, gears for simultaneously rotatingfsaid' sprockets in opposite directions, a sash carrying member,

idler pulleys on said member. `iixed idler pulleysy beneath said rail, an endless chain, al looped portlonof said` chain engaged with an idler pulley on said member 'intermediate its driving engage- 1 ment with said sprockets, a further looped portion of said chain engaged with another idler pulley onsaid member, and means for rotating said gears to alter the relative-length of the looped portions to move said sash carrying member.

4i In a window'strueture having-a frame and a window sash slidably mounted in said frame, afsash operator comprising an endless chain or the like, drive membersV of' different operative speeds and idler pulleys, saidchain encompassing said members and pulleys, asash carryingmem# ber, idler pulleys onU said sash member, and looped portions of saidv chain engaged with the pulleys of said sash member, and meansior operating said drive members to actuate said chain 'and alter therelative length-- 'o the looped portions whereby tov raisev or lower.. the.' sash carrying member. I

5. Ina window structure having a'frame and a, sash slidably mounted in said frame,` a sash operator 'comprising a. xed member, a pair of diierential sprockets vonv said member, means operableV to rotate said sprocketsy in' opposite directions, a pair of iixed idler pulleys, an endless chain or 'the like extendingaround andy engaging the outer portions ofV said sprockets and said idler pulleys, said chain being of such vlength as to provide looped portions, a sash carrying member, and means `on said sash carrying member engaged by said looped portions, said "sprockets, when rotated; uniformly altering. the relative length of said looped portionsfto effect move;-` 

